Just watch what you buy. I bought these 200 watt speakers not thinking they would be bigger than the ones in the existing holes.Had to cut the holes out 1/2" bigger to fit them in. Not a problem to do,but if you don't have the tools and the time watch what you change.

Description:
Measuring only 5"L x 7"W x 4-1/4"D, these
MA7500 Compact Box Speakers from Poly-Planar provide you with more mounting options. With 100 watts of peak power per pair, the MA7500 speakers are designed with a low magnetic field to block ...

Description:
Sony XS-MP1611 6-1/2" Dual Cone Speakers stand up
to the sun, saltwater, and spray, all while sounding nothing short of amazing. Water-resistant, UV-coated front or rear mounting XS-MP1611 speakers make for an ultra-durable addition to any watercraft. The removable, paintable ...